Marin Country Bike Coalition's Dirt Fondo
Saturday, Aug. 18, 2018
7:00am — 3:00pm
Presidio Riding Club Stables in the Marin Headlands

Like a gran fondo, but on dirt. Bring your gravel or mountain bike for a 45-mile ride through the Marin Headlands and Mt. Tam. (There are many options for shortening the ride.) Plus, there's a BBQ at the end.

More information here: